Remove legacy crisis alert email config

[Pigbibi]

Summary

• remove CRISIS_ALERT_EMAIL_TO and CRISIS_ALERT_EMAIL_FROM from runtime config and Cloud Run env sync
• document Google Voice notification config as the only crisis alert recipient surface
• update QuantPlatformKit and UsEquityStrategies pins to the Google Voice-only cleanup commits

Tests

• PYTHONPATH=/home/ubuntu/Projects/QuantPlatformKit/src:/home/ubuntu/Projects/UsEquityStrategies/src:. .venv/bin/python -m pytest tests/test_runtime_config_support.py tests/test_request_handling.py
• bash tests/test_sync_cloud_run_env_workflow.sh

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Remove legacy alert vars during Cloud Run sync

This change drops CRISIS_ALERT_EMAIL_TO/CRISIS_ALERT_EMAIL_FROM from both env_pairs and remove_env_vars, so the gcloud run services update call no longer removes those keys from existing services. In environments that already have these legacy variables set, they will persist indefinitely and the "legacy config removed" migration is incomplete, leaving stale runtime configuration drift after each sync.

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